In the fields of power equipment, electronic components, and advanced composite manufacturing, epoxy resin vacuum casting equipment has become an essential production system for ensuring product quality. By precisely controlling the vacuum environment and automating the casting process, this technology completely resolves long-standing industry challenges such as air entrapment, delamination, and uneven curing associated with traditional casting methods.
Why Has Vacuum Casting Become an Industry Standard?
During atmospheric-pressure casting, gases dissolved in the liquid resin or adsorbed on mold surfaces cannot be fully removed. After curing, these trapped gases form microscopic bubbles and defects, which directly lead to:
30%–50% reduction in electrical insulation strength
Brittle mechanical properties and susceptibility to cracking
Significantly shortened service life
Professional-grade vacuum casting equipment addresses these issues by maintaining a vacuum level of ≤5 Pa throughout the process. This enables the epoxy resin to fill, penetrate, and cure in a gas-free environment, resulting in a dense, flawless structure.
Core Value of Our Vacuum Casting System
1. Fully Intelligent Control System
Integrated with a dual-control architecture (PLC + touchscreen HMI), our system enables precise multi-dimensional control over vacuum level, temperature, mixing ratio, and casting speed. Pre-saved process recipes can be recalled with one click, guaranteeing consistent product performance across every batch.
2. Modular Vacuum Casting Workstation
Designed with a modular workflow—pre-treatment → mixing → casting → post-curing—the system can be flexibly configured based on production volume. Our proprietary three-stage vacuum degassing technology ensures deep deaeration before mixing, during mixing, and after casting.
3. Highly Customizable Solutions
Tailored to your product dimensions, resin characteristics, and capacity requirements, we offer:
Compact lab-scale systems (ideal for R&D institutions)
Mid-sized production lines (suited for small-to-medium batch manufacturing)
Fully automated large-scale casting systems (designed for high-volume industrial production)
Technical Highlights
Every core module of our epoxy resin vacuum casting equipment is engineered for ultimate precision and reliability—delivering solutions that exceed industry standards.
1. Vacuum System: Creating an Ultra-Pure Casting Environment
Achieves an ultimate vacuum of ≤3 Pa, and stably maintains ≤5 Pa throughout the entire casting cycle—a performance ～40% superior to common industry benchmarks. This ensures complete removal of dissolved gases in the resin and adsorbed gases in the mold cavity, eliminating bubble-related defects at the source.
2. Temperature Control System: Precision Thermal Management from Start to Finish
With an operating range from ambient temperature up to 180°C, the system meets the curing profiles of all major epoxy formulations.
Temperature accuracy is held within ±1°C, enhanced by a unique multi-zone uniform heating design that ensures consistent thermal distribution—even in large, complex parts—preventing cracks or warpage caused by thermal stress.
3. Mixing & Metering System: Absolute Accuracy in Material Ratios
Equipped with high-precision dynamic metering pumps, the system delivers a mixing ratio accuracy of ≤±0.5% between resin and hardener. A dual-stage mixing design—combining dynamic blending and static dispersion—achieves material homogeneity of >99.8%. The entire material path features a dead-leg-free design, preventing cross-contamination and ensuring batch-to-batch consistency.
4. Casting Control System: Stable and Controllable Filling Process
Casting flow rate is continuously adjustable from 0.1 to 20 L/min, with closed-loop control via high-response sensors. Advanced algorithms for pulse elimination and flow compensation ensure uninterrupted, stable material delivery—even during extended casting cycles—making it ideal for high-voltage insulation components requiring exceptional interlayer penetration.
Key Application Areas
High-Voltage Electrical Industry: GIS insulators, instrument transformers, bushings, support insulators
New Energy Sector: Wind turbine transformer windings, photovoltaic inverter modules
Transportation: Traction transformers for high-speed rail, EV charging station components
Specialty Manufacturing: Radar domes, sonar housings, deep-sea equipment encapsulation